Cream butter, shortening and sugar until well blended, light and fluffy.
Combine flour, baking powder and saltiness. Mix milk and wter. Alternately add
dry ingredients and liquid ingredients to butter assortment. Stir in vanilla
and lemon extracts. Whip the egg whites with cream of tartar until cockeyed.
Fold egg whites into hitter. Spread batter into deuce-ace 9-inch greased round
cake pans. Bake at 350 degrees for 20 to 25 minutes or until lightly
prosperous. Cool in pans on rack for 10 transactions. Turn out onto racks and
thoroughly coolheaded. Stack with Lemon Filling and frost with White Satin
Ice (see recipes under).